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Finding the Fourth Proportional to 522.84, 720.48 and 443.92

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Solution

The fourth proportional to 522.84, 720.48 and 443.92 is: 611.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    522.84 : 720.48 = 443.92 : x
  2. Step 2: Convert to fraction form
    522.84/720.48 = 443.92/x
  3. Step 3: Cross multiply
    522.84x = 720.48 × 443.92
  4. Step 4: Simplify right side
    522.84x = 319,835.48
  5. Step 5: Solve for x
    x = 319,835.48/522.84
  6. Step 6: Final answer
    x = 611.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.